163612345 has 48 divisors (see below), whose sum is σ = 227393712. Its totient is φ = 112250880.

The previous prime is 163612343. The next prime is 163612399. The reversal of 163612345 is 543216361.

It can be written as a sum of positive squares in 24 ways, for example, as 149744169 + 13868176 = 12237^2 + 3724^2 .

It is not a de Polignac number, because 163612345 - 2¹ = 163612343 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163612343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2241229 + ... + 2241301.

It is an arithmetic number, because the mean of its divisors is an integer number (4737369).

Almost surely, 2^163612345 is an apocalyptic number.

It is an amenable number.

163612345 is a deficient number, since it is larger than the sum of its proper divisors (63781367).

163612345 is a wasteful number, since it uses less digits than its factorization.

163612345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 161 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 163612345 is about 12791.1041352965. The cubic root of 163612345 is about 546.9387449831.

The spelling of 163612345 in words is "one hundred sixty-three million, six hundred twelve thousand, three hundred forty-five".